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“Water-cycle” mechanism for writing and erasing nanostructures at the LaAlO3/SrTiO3 interface

“Water-cycle” mechanism for writing and erasing nanostructures at the LaAlO3/SrTiO3 interface

Nanoscale control of the metal-insulator transition in LaAlO3/SrTiO3 heterostructures can be achieved using local voltages applied by a conductive atomic force microscope (c-AFM) probe. One proposed mechanism for such process involves adsorbed H2O which dissociates into OH− and H+ which are then selectively removed by a biased AFM probe. To …